Refugee law is the branch of international law which deals with the rights and protection of refugees. There are differences of opinion among international law scholars as to the relationship between refugee law and international human rights law or humanitarian law. The discussion forms part of a larger discussion on fragmentation of international law. While some scholars conceive each branch as a self-contained regime distinct from other branches, others regard the three branches as forming a larger normative system that seeks to protect the rights of all human beings at all time. The proponents of the latter conception view this holistic regime as including norms only applicable to certain situations such as armed conflict and military occupation (IHL) or to certain groups of people including refugees (refugee law), children (the Convention on the Rights of the Child), and prisoners of war (the 1949 Geneva Convention III).
Refugee law encompasses both customary law, peremptory norms, and international legal instruments.
The only international instruments directly applying to refugees are the 1951 United Nations Convention Relating to the Status of Refugees and the 1967 . Both the Convention and the Protocol are open to states, but each may be signed separately. 145 states have ratified the Convention, and 146 have ratified the Protocol. These instruments only apply in the countries that have ratified an instrument, and some countries have ratified these instruments subject to various reservations.
Various regional bodies have also agreed to regional instruments, which applying only to member states. These instruments include:
There are a variety of definitions as to who is regarded as a refugee, usually defined for the purpose of a particular instrument. refined the definition of a refugee found in the 1951 Convention as a person who:
Article 1 of the Convention as amended by the 1967 Protocol defines a refugee as:
The 1967 Protocol removed the temporal restrictions, which restricted refugee status to those whose circumstances had come about "as a result of events occurring before 1 January 1951", and the geographic restrictions which gave States party to the Convention the option of interpreting this as "events occurring in Europe" or "events occurring in Europe or elsewhere". However, it also gave those States which had previously ratified the 1951 Convention and chosen to use the geographically restricted definition the option to retain that restriction.